Innovation at the Garden?

We need a simple solution to (i) sift compost, (ii) separate large chunks that are should go back in the composter, AND (iii) spread compost.

I found two options (videos below). Which do you like?

Option 1: Rotating Trommel

materials:

bike parts

mesh

wood frame

used belt

Collect the sifted compost below. Collect the large chunks at the end. Haul the sifted compost to location for spreading. I wonder if there’s a way to make it human powered (e.g. hand crank or bicycle gears)?

Option 2: Spreader

materials:

bike parts

mesh

wheels

frame that can be pulled

used golf balls

Put the compost in. Pull the spreader. It sifts when it spreads. Modify the wheels so that the bin doesn’t rotate.